Big Garden Beak Watch David Fuller Big Garden Beak Watch Carol MitchellLisle Ian Davidson Dave Adamson Deformity type All species Blue Tit Blackbird Starling Great Tit Both mandibles overgrown ID: 552146
Download Presentation The PPT/PDF document "Carol Mitchell-Lisle" is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
Slide1
Carol Mitchell-Lisle
Big Garden Beak Watch
David Fuller
Big Garden Beak WatchSlide2
Carol Mitchell-LisleSlide3
Ian DavidsonSlide4
Dave Adamson
Deformity type
All species
Blue Tit
Blackbird
Starling
Great Tit
Both mandibles overgrown
164
73
10
28
21
Crossed mandibles
133492418Fractured beak6104200Gap between closed mandibles3111911Lateral curvature3121420Lower mandible overgrown70202772Other type323802Upper mandible overgrown22288291717 7442361735651
Types of beak deformities
Why?Slide5
Roger PeartSlide6
Brian SealySlide7
Susan LooseSlide8
Species affected
Species
Number of records
Ave weekly count per garden
Beak Deformity Rate (BDR)
Blue Tit
214
2.800
76.43
Blackbird
147
2.655
55.37
Starling
523.83813.55Great Tit481.80626.58Woodpigeon312.23113.893Rook300.299100.33Jackdaw181.12416.01House Sparrow164.9403.239Robin161.22113.10Chris Gomersall